JPH02165907A - Concrete pile cutter - Google Patents

Abstract

PURPOSE:To perform 'fret sawing' of a concrete pile by slidably attaching a guide member provided at the side of a cutter body to a guide rail of an installation base, matching a cutter to the cutting position of the concrete pile, and then annularly moving the cutter body along the guide rail. CONSTITUTION:The dividing units 60b, 60c of an installation base 60 are brought into contact by inserting a concrete pipe 65 into an insertion hole 61, both ends are coupled by a clamping member 63, and a cutter body 2 is placed on a placing face 60a of the installation base 60. In this case, a guide rail 62 is interposed between the engaging edge 15a of a guide member 15 and a lateral roller 16. Then, a mount 40 is vertically moved along a guide shaft 18 according to the rotating direction of a handle 22, and the cutting blade 54 of a cutter 50 is matched to the cutting position of the concrete pile 65. The cutting blade 54 is rotated, injection tubes 52a, 52b, the clock of a regulating valve 49 are opened to inject water to the upper and lower faces of the cutting blade 54, the cutting blade 54 is brought into contact with the predetermined position of the concrete pile 65 to be started obliquely cutting.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for cutting off the excess portion of a concrete pile cast underground that remains above ground.

[Conventional technology]

Conventional concrete pile cutting equipment places an electric cutter combined with a hydraulic pump on a support frame directly attached to the pile, facing the centripetal direction of the pile, and advances the electric cutter in the centripetal direction to a predetermined depth to cut the pile. It was a so-called "direct cut".

[Problem to be solved by the invention]

Note: Conventional pile cutting devices advance the cutter in the centripetal direction of the pile, so there is a large load resistance on the blade due to the relationship between reinforcing bars and aggregates, and the impact can damage the blade, and the blade can break due to heating. There was a problem that this occurred. In addition, forcing the motor in forcibly could cause the motor to heat up and malfunction.

Furthermore, with conventional pile cutting equipment, the support frame is supported by hand and fixed to the pile with bolts, etc., and then the electric cutter is placed on the support frame before work is started, which makes it time-consuming and time-consuming to attach the support frame to the pile. In addition, it is difficult to attach the electric cutter to the pile while aligning it with a predetermined position on the pile, resulting in very low work efficiency.

The present invention has been devised in view of the above-mentioned problems, and provides a concrete pile cutting device that can rotate the cutting direction and easily align the electric cutter with the cutting position of the pile. The purpose is to

[Failure to solve the problem]

The concrete pile cutting device according to the present invention has been devised to achieve the above-mentioned object, and includes an installation stand and a 1i? The installation stand has a mounting surface on which the cutting machine main body is placed and an insertion hole through which the concrete pile is inserted, and an annular hole surrounding the insertion hole is formed on the mounting surface. An idle rail is provided, and the cutting machine body consists of a moving base, a vertical moving means provided on the moving base, and a mounting base provided on the vertical moving means to which the cutting machine is attached. The roller is provided with a roller that moves on the mounting surface, and the side portion thereof is provided with an idle member that slides into contact with the idle rail.

[Effect]

Therefore, the concrete pile to be cut is inserted into the insertion hole of the installation stand, and the cutting machine body is placed on the mounting surface of the installation stand. At this time, the id member provided on the side of the cutting machine body is slidably attached to the id rail of the installed base. Next, after the cutting machine is aligned with the cutting position of the concrete pile by the vertical moving means, the cutting machine main body is moved via the rollers while driving the cutting machine. The main body of the cutting machine moves in a circular manner along the idle rail, and performs turning 1 of the concrete pile.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings. 1
is a concrete pile cutting device, and the cutting allowance main body 2
and an installation stand 60.

Further, the cutting machine main body 2 is connected to a movable table 3. It consists of a vertical moving means 17 and a mounting base 40. As shown in FIG. 2, the movable table 3 has a lower left vertical member 4 and a lower right vertical member 7, each having a cross-section with a cross-section, on both sides. On the side wall of this lower left vertical member 4,
Sliding elongated holes 4m, 4 for sliding the sliding bin 19a of the +iii sliding pongee 19 and the sliding bin 20a of the rear sliding shaft 20, which will be described later.
b is formed, and a front sliding shaft 19 is formed on the side wall of the lower right vertical member 7.
Elongated sliding holes 7ay 7b are formed for sliding the sliding pin 19b of the rear sliding shaft 20 and the sliding pin 20b of the rear sliding shaft 20. or,
The front reinforcing member 1 is installed at the front and rear of the lower left vertical member 4 and the lower right [member 7, so that the lower left vertical member 4 and the lower right vertical member 7 are integrated.
0 and the rear reinforcing member 11 are horizontally suspended and fixed. The front end surface of the front reinforcing member 10 and the rear end surface of the rear reinforcing member 11 are provided with fixing holes 1 for fixing an id shaft 18, which will be described later.
A pair of fixing members 12 each having a fixing member 2a are provided. Furthermore, on the bottom of the lower left member 4 and the lower right vertical member 7, there is a frame member 14 rotatably equipped with a vertical roller 13 for transferring on a mounting surface 60a of an installation stand 60, which will be described later.
In order to be movable in the direction indicated by the arrow in the figure, one is fixed to each of the front and rear parts. A gamma side member 15 for sliding along the side rail 62 is provided. It is composed of a side 115c fixed to the side wall of the vertical member 7 and a lower wall 15d.Inside the side member 15, a horizontal roller 16 that transfers while contacting the side surface of the idle rail 62 is attached to the vertical roller 13. The rotating shaft 16a of the horizontal roller 16 is provided at right angles to the upper wall 15b and the lower!!1t1.
It is designed to be pivoted to 5d. 19.20 are the front sliding shaft and the rear sliding shaft of the vertical moving means 17, and the sliding pin 19a of the front sliding shaft 19 is inserted into the sliding slot 4a of the lower left vertical member 4, and the sliding pin 19b is inserted into the sliding slot 4a of the lower left vertical member 4. is inserted into the sliding elongated hole 7a of the lower right vertical member 7, the sliding pin 20a of the rear sliding shaft 20 is inserted into the sliding elongated hole 4b of the lower left vertical member 4, and the sliding pin 20b is inserted into the sliding elongated hole 4b of the lower right vertical member 7. It is inserted into the long sliding hole 7b. Therefore, the front sliding shaft 1
9 is configured to slide along the long sliding holes 4g and 7a, and the rear sliding shaft 20 is configured to slide along the long sliding holes 4g and 7a. b, 7b. Further, a bulging portion 19C920c is provided approximately at the center of the bo I sliding pongee 19 and the rear sliding shaft 20, and the bulging portions 19c and 20c have female threaded portions 19d and 20cl whose threads rotate in different directions. is formed. The female screw portions 19d and 20d have fI4
=The male threaded portion 21a of the x-axis 21 is screwed together, and the rotation of this adjustment shaft 21 causes the front sliding shaft 19 and the rear sliding shaft 20 to move toward and away from each other. Note that, at both ends of the adjustment shaft 21, there are protruding shafts 21. whose cross sections are rectangular. b is formed, and this protruding shaft 21b has a handle 22 with four parts that fit into the protruding shaft 21b.
is designed to be removably attached.

Reference numerals 31 and 32 denote left horizontal members, each of which has pivot holes 31b and 32b in its lower part for pivotally supporting the sliding bins 19a and 20a.
, and has a sliding elongated hole 37 of the upper left vertical member 37, which will be described later, in the upper part.
Sliding pins 31a and 32a that slide on a and 37b are provided protrudingly, and a support shaft hole 31c is provided in the center through which a support shaft 35, which will be described later, is inserted.
32c is bored.

Reference numerals 33 and 34 denote right side members, and the sliding bins 19bI20b are supported in the lower part thereof by a C7r support hole 331J.

34b, and slides in sliding slots 38a and 38b of an upper right vertical member 38, which will be described later, on the upper part.

34a is provided protrudingly, and a spindle hole 33C934C is bored in the center through which a spindle 35, which will be described later, is inserted. The left lateral member 31, 32 formed as described above has a support shaft hole 31c.
, 32c, one end of the support shaft 35 is inserted and intersects,
The shaft support hole 32b of the left horizontal member 32 pivotally supports the sliding pin 19a of the front sliding shaft 19, and the sliding pin 32a is inserted into the long sliding hole 37b of the upper left vertical member 37, while Pivot hole 3
1b pivotally supports the sliding pin 20a of the rear sliding shaft 20, and the sliding pin 31a is inserted into the sliding elongated hole 37a of the upper left vertical member 37. Further, in the right horizontal member 33 , 34 , the other end of the support shaft 35 is inserted into the support shaft holes 33 c and 34 c and intersects with each other, and the shaft support hole 331 J of the right horizontal member 33 is inserted into the support shaft holes 33 c and 34 c so that the rear sliding shaft 20 slides. The sliding pin 33a is inserted into the long sliding hole 38a of the upper right vertical member 38, while the sliding pin 19b of the front sliding shaft 19 is supported by the sliding pin 33a of the right horizontal member 34. However, the sliding bottle 34a is inserted into a sliding elongated hole 38b of the upper right vertical member 38. The upper left vertical member 37 and the upper right vertical member 38 are formed into a substantially linear shape in cross section, and as described above, the side wall of the upper left vertical member 37 has a sliding length for inserting the sliding pin 31a of the left horizontal member 31. A long sliding hole: 37b is formed through which the sliding pin 32a of the left horizontal member 32 is inserted through the hole 37a,
The sliding bin 33 of the right horizontal member 33 is attached to the side wall of the upper right vertical member 38.
A sliding elongated hole 38a through which the a is inserted and a sliding elongated hole 38[1 through which the sliding pin 34a of the right lateral member 34 is inserted are formed.

Further, a cutting machine mount 40 is fixedly attached to the upper surfaces of the upper left vertical member 37 and the upper right vertical member 38. A sliding member 41 having a sliding hole 41a through which the id pongee 18 is slidably inserted is fixed to the front and rear edges of the mounting base 40. A female threaded hole 41b is formed in the side surface of this sliding member 41, and a set screw 42 is screwed into this female threaded hole 41b. Further, a bearing receiving hole 43 for receiving a bearing 51a that rotatably supports a supporting shaft 51 of a cutting machine 50 is formed approximately in the center of the mounting base 40, and the supporting shaft 51 is inserted through the center of this receiver 43. An insertion hole 43a is provided. This cutting blade 5 is attached to the air motor M and the rotating shaft of the air motor M.
4, a protective case 55 to which these are attached, a handle 53 provided on the upper part of the protective case 55 for press-contacting the cutting blade 54 to the concrete bile 65, and a handle 53 provided at the lower part of the protective case 55 with respect to the rotating shaft of the air motor M. It consists of a support shaft 51 that is eccentrically provided, and can be rotatably attached to the mounting base 40 by inserting the support shaft 51 into the receiver 43 via a bearing 51a. Further, a bearing receiving hole 44 for receiving a bearing 57a that rotatably supports the pongee 57 of the adjuster 56 is formed near the pet dog 43 on the mounting base 40, and the pongee 57 is inserted through the center of the receiver 44. An insertion hole 44a is provided. This adjuster 56 has a tip 58a connected to the protective case 55.
An im9 shaft 58 that is rotatably attached to one end and has a scale 58b formed on the other side, a holding part 59 that slidably holds this adjustment shaft 58, and a holding part 59 that is hinged to the five holding parts and adjusts. It consists of a tightening pole 59a that holds the shaft 58 and a pongee 57 provided at the lower part of the holding part 59, and by inserting the shaft 57 into the receiver 44 via the bearing 57a,
It is designed to be rotatably attached to one tray 40. Therefore, the cutting machine 50 can be rotated at any angle with respect to the mounting base 40 by the adjuster 56, and the depth of cut by the cutting blade 54 can be determined by adjusting the position of the adjusting shaft 58 with the eye Wt58b. Furthermore, 52a, 52
b is a fountain pipe whose tip faces directly above and below the cutting blade 54, is fixedly attached to the protective case 55, and whose rear end is connected to one end of the control valve 49.

The other end of the control valve 49 is connected to a water faucet or pump (not shown).
is connected to by a hose 49a.

Reference numeral 60 denotes an installation base formed on a circular flat plate, which has a mounting surface 60a on which the cutting machine main body 2 is mounted, and an insertion hole 61 in the center through which the concrete pile 65 is inserted.
Around this insertion hole 61 is an idle rail 62 with an angled cross-section.
is fixed in a ring shape. Note that the installation stand 60 is formed of two parts 60b and 60c, and both ends of the contact portion are connected to the connecting piece 6.
3a and a fastening part 63 consisting of a bolt 63b, and are integrated.

Next, how to use it will be explained. Divided body 6 of installation stand 60
0b and 600, concrete pile 65 through hole 61
The fastening member 6
Connect by 3. Then, the cutting machine main body 2 is installed on the installation stand 60.
is placed on the mounting surface 60a of. At this time, the id member 15
Between the locks 1 & 15a and the horizontal roller 16, the idle rail 6
2 in between. Next, adjust the handle 22 to the adjustment shaft 2.
When the handle 22 is rotated, the front sliding pongee 19
The rear sliding shaft 20 approaches and separates, the left lateral member 31° 32 and the right lateral member 33, 34 tilt, and the mounting base 40 moves toward the id shaft 18.
go up and down along. In this way, the cutting blade 54 of the cutting 8!50 can be aligned with the cutting position of the concrete pile 65. When the set screw 42 of the mounting base 40 is screwed into the female threaded hole 41b in this aligned state, the tip of the set screw 42 comes into pressure contact with the id pongee 18, and the position of the mounting base 40 is fixed. Then, the air motor M of the cutting machine 50 is driven to rotate the cutting blade 54 and open the cocks of the water fountain pipes 52a, 52b regulating valve 49 to spray water onto the upper and lower surfaces of the cutting blade 54. Next handle 5
3 in the direction of the concrete pile 65, the cutting machine 50 moves the support shaft 51 as shown by the two-point IR1 line 1 in FIG.
The cutting blade 54 comes into contact with a predetermined position of the concrete pile 65 and begins diagonal cutting. During cutting, the cutting blade 54 is sprayed with water from the upper and lower surfaces, which prevents cutting debris from scattering and is sufficiently cooled to prevent cutting problems such as jamming or breaking due to heating. It can be easily avoided.

After cutting to a predetermined depth, the rotation angle of the cut 8!50 is read on the scale 58b of the adjustment shaft 58, and the adjustment shaft 58 is fixed by tightening the tightening pole 59a (=J).

This results in a constant cutting depth at all times.

In this way, cutting 8!50 allows cutting at an angle diagonally to the pile 65 using the - point support shaft 51, which prevents the cutting edge from dropping due to the impact during cutting and cutting high-strength objects or reinforcing bars. You can cut while avoiding the resistance that occurs when cutting. After that, when the handle 53 is used to move the cutting fllrfi main body 2 in the circumferential direction of the guide rail 62, the vertical roller 13 is moved onto the mounting surface 60a of the installation base 60.
The horizontal roller 16 rolls on the side surface of the idle rail 62, and the cutting machine main body 2 moves annularly along the idle rail 62. Therefore, the cutting machine main body 2 performs the turning 1 of the concrete pile 65.

As explained in the following embodiments, the concrete pile cutting device 1 can be easily installed at the work place, and the vertical position of the cutting device 50 can be easily set by the lower L moving means 17, thereby increasing work efficiency. be able to.

In the embodiment, the vertical moving means 17 is connected to the left horizontal member 31,
32 and the right lateral members 33 and 34 are formed by crossing each other, but they may also be formed as shown in FIG.
A guide support member 73 having a rack 73a is erected in one stroke of 1. An id support member 7 is attached to one side of the cutting rock mounting base 75.
3 is fitted into a U-shaped notch 71a, and a right guide piece 76 in an abbreviated shape surrounds this notch 71a.
Fix the left side piece 77 to the mounting base 75. A pinion 78, which is always engaged with the rack 73a, is rotatably disposed between the right guide piece 76 and the left guide piece 77. Then, the spline 79 of the binion 78 is made to protrude from the left side piece 77, and an axial spline part 79a is formed in this protrusion. Further, a hole spline portion 77a is formed at the shaft spline portion 9a of the left side piece 77. Next, the shaft spline part 7
The fitting shaft 8 has a hole spline portion 81b into which the fitting shaft 9a is fitted.
1, and a shaft spline portion 8 that fits into the hole spline portion 77a on the outer periphery of this fitting shaft 81.
Form 1a. In this way, a cutting device 70 different from the previous embodiment can be formed. In use, the hole spline ff1s81 of the handle 80 is
b into the pongee spline ffl579a, and handle 8
By rotating the pinion 78, the vertical position of the mounting base 75 can be freely set. In order to fix the position of the mounting base 75, the hole spline portion 81b is slid onto the pongee spline portion 79a, and the pongee spline portion 81a of the handle 80 is attached to the hole spline portion 79a.
7a. By forming in this way, the position of the mounting base 75 can be easily fixed.

Furthermore, in the embodiment described above, the idle rail 62 was provided on the outside of the cutting machine main body 2, but it may be formed on the inside as shown in FIG. By forming the guide member in this way, the overall length of the idle rail 92 can be shortened and the manufacturing cost can be kept low.
, (b). This guide member 93 has a holding member 94 that is fixedly attached to the outer surface of the side wall of the lower left R member 4 . The frame member 14 of the vertical roller 13 is fixedly provided on the lower surface of this holding member 94, and furthermore, the rear part of the supporting member 95, which rotatably supports the horizontal roller 16 at its tip, is slidably provided on the side surface of the holding member 94. A holding hole 94a is drilled, and a compression spring 96 is installed in this hole 94a to urge the support member 95 laterally. Further, a locking member 97 having a locking edge 97a for hooking onto the idle rail 92 is fixed to the upper surface of the holding member 94. Therefore, Section II'
, when the edge 97a is hooked on the side wall of the idle rail 92,
The vertical roller 13 rides on the bottom wall of the γ idle rail 92, and the horizontal roller 16 is pressed against the side wall of the idle rail 92 by a spring 96. Therefore, the guide member 93
can be stably attached to the idle rail 92.

In the above embodiments, one idle rail has been described, but as shown in FIG. 9, it can also be provided on the outside and inside of the cutting machine main body 2. At this time, the frame member 98 of the horizontal roller 16 is fixedly attached to the lower right vertical member 7, and the frame member 98 of the horizontal roller 16 is urged laterally by a spring to the lower left vertical member 4 as in the above embodiment. By attaching it in this manner, the cutting machine main body 2 can be easily and stably placed on the installation stand 60 without requiring the locking member 97 as in the previous embodiment.

It goes without saying that the present invention is not limited to the above embodiments, and can be modified in various ways.

〔Effect of the invention〕

The present invention can provide a concrete pile cutting device that can be easily installed at a work site, and can also easily and reliably align the cutting blade of the cutting machine with the cutting position of the concrete pile, greatly increasing work efficiency. have an effect.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention [an overall perspective view, FIG. 2 is a perspective view of a main part thereof, FIG. 3 is a sectional side view thereof, and FIG. 4 is a cross-sectional view showing a cut state of the present invention. , FIG. 5 is an overall perspective view of another embodiment of the present invention as seen from one direction, FIG. 6 is an overall perspective view as seen from another direction, and FIGS. 7 to 9 are side views further showing a pond embodiment. It is a diagram. 1.70... Concrete pile cutting device 2... Cutting machine body 3,71... Moving table 15... Guide member 17.72... Vertical moving means 40.75... Mounting base 50. ... Cutting machine 60 ... Installation stand 61 ... Insertion hole 62 ... Guide rail 65 ... Concrete pile

Claims (1)

[Scope of Claims] A concrete pile cutting device characterized by comprising an installation stand and a cutting machine body placed on the installation stand and having the following requirements. (B) The installation stand has a mounting surface on which the cutting machine body is placed and an insertion hole through which the concrete pile is inserted, and an annular guide rail surrounding the insertion hole is provided on this mounting surface. thing. (b) The cutting machine main body shall consist of a moving table, a vertical moving means provided on the moving table, and a mounting base provided on the vertical moving means to which the cutting machine is attached. (c) A roller for moving on the mounting surface is provided on the lower surface of the moving table, and a guide member that slides on the guide rail is provided on the side.